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  <title>Returns the total number of rows changed, deleted, inserted, or
  matched by the last statement executed</title>
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    <li>Returns the total number of rows changed, deleted, inserted, or
  matched by the last statement executed</li>
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<div id="layout">
  <div id="layout-content"><div id="mysqli-stmt.affected-rows" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">mysqli_stmt::$affected_rows</h1>
  <h1 class="refname">mysqli_stmt_affected_rows</h1>
  <p class="verinfo">(PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">mysqli_stmt::$affected_rows</span> -- <span class="refname">mysqli_stmt_affected_rows</span> &mdash; <span class="dc-title">Returns the total number of rows changed, deleted, inserted, or
  matched by the last statement executed
  </span></p>

 </div>

 <div class="refsect1 description" id="refsect1-mysqli-stmt.affected-rows-description">
  <h3 class="title">说明</h3>
  <p class="para">面向对象风格</p>
  <div class="fieldsynopsis"><span class="type"><span class="type">int</span>|<span class="type">string</span></span> <var class="varname"><a href="mysqli-stmt.affected-rows.html">$mysqli_stmt-&gt;affected_rows</a></var>;</div>

  <p class="para">过程化风格</p>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>mysqli_stmt_affected_rows</strong></span>(<span class="methodparam"><span class="type"><a href="class.mysqli-stmt.html" class="type mysqli_stmt">mysqli_stmt</a></span> <code class="parameter">$statement</code></span>): <span class="type"><span class="type">int</span>|<span class="type">string</span></span></div>

  <p class="para rdfs-comment">
   Returns the number of rows affected by <code class="literal">INSERT</code>,
   <code class="literal">UPDATE</code>, or <code class="literal">DELETE</code> query. 
   Works like <span class="function"><a href="mysqli-stmt.num-rows.html" class="function">mysqli_stmt_num_rows()</a></span> for
   <code class="literal">SELECT</code> statements.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-mysqli-stmt.affected-rows-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    <dt>

<code class="parameter">statement</code></dt>
<dd>
<p class="para">仅以过程化样式：由
<span class="function"><a href="mysqli.stmt-init.html" class="function">mysqli_stmt_init()</a></span> 返回的 <span class="classname"><a href="class.mysqli-stmt.html" class="classname">mysqli_stmt</a></span> 对象。</p></dd>

   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-mysqli-stmt.affected-rows-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   An integer greater than zero indicates the number of rows affected or
   retrieved. Zero indicates that no records were updated for an 
   <code class="literal">UPDATE</code> statement, no rows matched the
   <code class="literal">WHERE</code> clause in the query or that no query has yet been
   executed. <code class="literal">-1</code> indicates that the query returned an error or
   that, for a <code class="literal">SELECT</code> query,
   <span class="function"><strong>mysqli_stmt_affected_rows()</strong></span> was called prior to calling
   <span class="function"><a href="mysqli-stmt.store-result.html" class="function">mysqli_stmt_store_result()</a></span>.
  </p>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <p class="para">
    If the number of affected rows is greater than maximum PHP int value, the
    number of affected rows will be returned as a string value.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 examples" id="refsect1-mysqli-stmt.affected-rows-examples">
 <h3 class="title">范例</h3>
  <div class="example" id="example-1482">
   <p><strong>示例 #1 <span class="methodname"><strong>mysqli_stmt_affected_rows()</strong></span> example</strong></p>
   <div class="example-contents"><p>面向对象风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_ERROR&nbsp;</span><span style="color: #007700">|&nbsp;</span><span style="color: #0000BB">MYSQLI_REPORT_STRICT</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;create&nbsp;temp&nbsp;table&nbsp;*/<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE&nbsp;TEMPORARY&nbsp;TABLE&nbsp;myCountry&nbsp;LIKE&nbsp;Country"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"INSERT&nbsp;INTO&nbsp;myCountry&nbsp;SELECT&nbsp;*&nbsp;FROM&nbsp;Country&nbsp;WHERE&nbsp;Code&nbsp;LIKE&nbsp;?"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;prepare&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">$stmt&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">prepare</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Bind&nbsp;variable&nbsp;for&nbsp;placeholder&nbsp;*/<br /></span><span style="color: #0000BB">$code&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'A%'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">bind_param</span><span style="color: #007700">(</span><span style="color: #DD0000">"s"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$code</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;execute&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Rows&nbsp;inserted:&nbsp;%d\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">affected_rows</span><span style="color: #007700">);</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>过程化风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_ERROR&nbsp;</span><span style="color: #007700">|&nbsp;</span><span style="color: #0000BB">MYSQLI_REPORT_STRICT</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$link&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">mysqli_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;create&nbsp;temp&nbsp;table&nbsp;*/<br /></span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"CREATE&nbsp;TEMPORARY&nbsp;TABLE&nbsp;myCountry&nbsp;LIKE&nbsp;Country"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"INSERT&nbsp;INTO&nbsp;myCountry&nbsp;SELECT&nbsp;*&nbsp;FROM&nbsp;Country&nbsp;WHERE&nbsp;Code&nbsp;LIKE&nbsp;?"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;prepare&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">$stmt&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">mysqli_prepare</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Bind&nbsp;variable&nbsp;for&nbsp;placeholder&nbsp;*/<br /></span><span style="color: #0000BB">$code&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'A%'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">mysqli_stmt_bind_param</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"s"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$code</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;execute&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">mysqli_stmt_execute</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Rows&nbsp;inserted:&nbsp;%d\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">mysqli_stmt_affected_rows</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">));</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程会输出：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
Rows inserted: 17
</pre></div>
   </div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-mysqli-stmt.affected-rows-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="mysqli-stmt.num-rows.html" class="function" rel="rdfs-seeAlso">mysqli_stmt_num_rows()</a> - Returns the number of rows fetched from the server</span></li>
    <li class="member"><span class="function"><a href="mysqli-stmt.store-result.html" class="function" rel="rdfs-seeAlso">mysqli_stmt_store_result()</a> - Stores a result set in an internal buffer</span></li>
   </ul>
  </p>
 </div>


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